CN212474017U - Screw type liquid medicament metering mechanism - Google Patents
Screw type liquid medicament metering mechanism Download PDFInfo
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- CN212474017U CN212474017U CN202020931242.3U CN202020931242U CN212474017U CN 212474017 U CN212474017 U CN 212474017U CN 202020931242 U CN202020931242 U CN 202020931242U CN 212474017 U CN212474017 U CN 212474017U
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- motor
- screw rod
- frame
- material pipe
- liquid medicament
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Abstract
The utility model discloses a screw type liquid medicament metering mechanism, which comprises a motor, wherein the motor is composed of a servo motor, a frame for supporting is arranged at the lower side of the motor, the motor is connected with a screw rod arranged in the middle of the frame in a penetrating way, and a fixing frame is fixedly arranged at the lower side of the frame; the screw rod penetrates through the fixed frame and coaxially penetrates through the material pipe at the bottom side of the fixed frame, and is provided with a spiral groove with the thread pitch of less than 10mm and the thickness of less than 2 mm; the top of the material pipe is provided with a filling hopper fixed with the fixing frame, the top side of the filling hopper is provided with a feeding port, and the radial distance between the inner wall of the material pipe and the outer wall of the screw rod is smaller than 0.05 mm. The utility model aims at providing a screw metering mechanism who is applicable to liquid medicament to can be to the accurate measurement of unloading volume.
Description
Technical Field
The utility model relates to a liquid measurement field especially relates to a screw liquid medicament metering mechanism.
Background
The medicaments are liquid, solid and powdery, and the manual pouring and metering of the medicaments are troublesome, so that a special medicament meter is required. The screw metering device in the prior art is only suitable for the blanking metering of powder and lacks the application of liquid medicament blanking metering. Therefore, there is a need for a screw-type metering mechanism suitable for liquid medicines and capable of accurately metering the amount of discharged materials.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the above-mentioned prior art, aim at providing one kind and be applicable to liquid medicament to can be to the screw metering mechanism of the accurate measurement of unloading volume.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a screw type liquid medicament metering mechanism comprises a motor, wherein the motor is composed of a servo motor, a rack for supporting is arranged on the lower side of the motor, the motor is connected with a screw rod penetrating through the middle of the rack, and a fixing frame is fixedly arranged on the lower side of the rack; the screw rod penetrates through the fixed frame and coaxially penetrates through the material pipe at the bottom side of the fixed frame, and is provided with a spiral groove with the thread pitch of less than 10mm and the thickness of less than 2 mm; the top of the material pipe is provided with a filling hopper fixed with the fixing frame, the top side of the filling hopper is provided with a feeding port, and the radial distance between the inner wall of the material pipe and the outer wall of the screw rod is smaller than 0.05 mm.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses can carry out the unloading and the measurement of liquid medicament, the spiral space that constitutes between the helicla flute of screw rod and the material pipe inner wall can let and satisfy that liquid density is greater than 1g/cm3, and the liquid medicament that kinematic viscosity is greater than 10cst receives the influence of material pipe bottom side liquid level tension and keeps lieing in the helicla flute between screw rod and the material pipe. After the liquid medicament is fed in from the feeding hole, the servo motor is opened again to rotate the screw rod, so that the liquid medicament in the spiral groove falls down under the influence of centrifugal force and downward acting force generated by rotation of the screw rod, the number of rotation turns of the screw rod is recorded through a rotary encoder arranged on the servo motor, and the feeding amount of the liquid medicament is measured through the number of rotation turns.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the middle screw rod of the present invention.
Description of reference numerals:
1-motor, 2-screw, 3-frame, 4-fixed mount, 5-material pipe, 6-filling hopper, 7-feeding hole.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 and 2, a screw liquid medicament metering mechanism comprises a motor 1, wherein the motor 1 is composed of a servo motor, a frame 3 for supporting is arranged at the lower side of the motor 1, the motor 1 is connected with a screw 2 penetrating through the middle part of the frame 3, and a U-shaped fixing frame 4 is fixedly arranged at the lower side of the frame 3; the screw 2 penetrates through the fixed frame 4 and coaxially penetrates through the material pipe 5 at the bottom side of the fixed frame 4, and the screw 2 is provided with a spiral groove with the thread pitch of less than 10mm and the thickness of less than 2 mm; the top of the material pipe 5 is provided with a filling hopper 6 fixed with the fixing frame 4, the top side of the filling hopper 6 is provided with a feeding port 7, and the radial distance between the inner wall of the material pipe 5 and the outer wall of the screw rod 2 is less than 0.05 mm.
The utility model discloses during the unloading liquid medicament will be waited to supply to get into material pipe 5 through feed supplement mouth 7 before the work, make liquid medicament fill from top to bottom between screw rod 2 and material pipe 5 inner wall along the helicla flute of screw rod 2 and be full of. After the liquid medicament is supplemented, the motor 1 is started to rotate and the servo motor is controlled to rotate at a constant speed. The spiral groove can continuously generate two acting forces vertical to the spiral groove surface on the liquid medicament, the centrifugal force vertical to the axial direction of the screw rod 2 and the driving force vertical to the axial direction of the screw rod 2 are perpendicular to each other, and the material can be only conveyed downwards along the axial direction of the screw rod 2 because the material pipe 5 is blocked around the screw rod 2. Every time the screw rod 2 rotates a circle, the liquid medicament amount which can be contained in the spiral groove with a pitch height is extruded, and then the rotation number of circles is recorded through a rotary encoder on the servo motor, so that the metering of the liquid medicament discharging amount is completed.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The utility model provides a screw liquid medicament metering mechanism, includes the motor, its characterized in that: the motor is composed of a servo motor, a rack for supporting is arranged on the lower side of the motor, the motor is connected with a screw rod penetrating through the middle of the rack, and a fixing frame is fixedly arranged on the lower side of the rack; the screw rod penetrates through the fixed frame and coaxially penetrates through the material pipe at the bottom side of the fixed frame, and is provided with a spiral groove with the thread pitch of less than 10mm and the thickness of less than 2 mm; the top of the material pipe is provided with a filling hopper fixed with the fixing frame, the top side of the filling hopper is provided with a feeding port, and the radial distance between the inner wall of the material pipe and the outer wall of the screw rod is smaller than 0.05 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020931242.3U CN212474017U (en) | 2020-05-28 | 2020-05-28 | Screw type liquid medicament metering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020931242.3U CN212474017U (en) | 2020-05-28 | 2020-05-28 | Screw type liquid medicament metering mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212474017U true CN212474017U (en) | 2021-02-05 |
Family
ID=74411075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020931242.3U Active CN212474017U (en) | 2020-05-28 | 2020-05-28 | Screw type liquid medicament metering mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212474017U (en) |
-
2020
- 2020-05-28 CN CN202020931242.3U patent/CN212474017U/en active Active
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